S90-010 O FRICK
QUANTUM™ COMPRESSOR CONTROL PANEL
Page 92 OPERATION
• (Module 6) - Remote Unload or Remote C.C
step 2 for step units
• Remote Unload - If the Slide Valve is in
remote and this input is energized, the Slide
Valve unload solenoid will be energized.
• Remote C.C step 2 for step units - If the
Capacity Mode is in Remote this input is
used to step on and off capacity according to
the Remote Capacity Control chart.
Remote Capacity Control Chart
Input \ %Capacity 25 50 75 100
3-Step Input 4
OFF OFF ON
3-Step Input 5
OFF ON ON
4-Step Input 4
OFF ON OFF ON
4-Step Input 5
OFF OFF ON ON
• Recycle Delay (If compressor is off) - This
output is energized while the remaining time
in minutes for Recycle Delay is greater than
zero (0). Recycle delay time is the time that
must elapse prior to allowing the compressor
to restart. This timer times out while the
compressor is running or stopped since the
Recycle Delay is a start-to-start protection.
The Recycle Delay time is intended to
prevent damage to the motor from
successive restarts. For further setup see
the Motor Control Setpoints screen
• Sequence Input (If compressor is on) –
Reports the status of Stop Load or Force
Unload (See Slide Valve and Slide Stop
Status box for further details).
The Hot Gas Bypass/SV Setpoint option can be used.
This option, which is enabled in Panel Setup, is not
available for all compressor models (Reference
Compressor Model Differences). Three digital outputs are
provided that signal when the Slide Valve has reached
preset positions. For further setup, see the Slide Valve
Setpoints screen.
The Remote Control Setpoint option can be used. This
option, which is enabled in Panel Setup, is not available
for all compressor models (Reference Compressor Model
Differences). This uses the Remote Control Setpoint
analog input and the Remote Control Setpoint analog
output for Capacity Control of compressors. For further
setup see the Calibrate Remote Control Setpoint screen
and the [Remote Setpoint] command key from the Slide
Valve Mode screen command keys on the Operating
Status screen.
The Remote Slide Valve Position option can be used. This
option which is enabled in Panel Setup is not available for
all compressor models (Reference Compressor Model
Differences). This uses a (4-20 ma) input signal to the
Remote Slide Valve Position analog input (Channel #13
on Analog Board #1) to control the Slide Valve. For further
setup see the Calibrate Slide Valve Position screen and
the [Remote Slide Valve] command key from the Slide
Valve Mode screen command keys on the Operating
Status screen.
The Slide Valve Position \ Capacity analog output can be
used to determine the present Slide Valve position % or
Capacity % dependent on the compressor model
(Reference Compressor Model Differences). A (4-20 ma)
output signal to the Slide Valve Position \ Capacity analog
output (Channel #3 on Analog Board #1) corresponds to
the present (%) value displayed on the Operating Status
screen.
ASCII communication to the Com-2 port can be used
(reference S90-010 CS Communications Setup manual).
A compressor should be in both Remote Compressor
Mode and Remote Slide Valve or Capacity Mode for
Remote Control.
Note 1: If the compressor is in Remote mode and
communication through the communication port has
not occurred for 5 minutes, then the compressor is
placed into Automatic mode and the Slide Valve is
placed into Auto mode.
Note 2: If there is a shutdown in response to a safety
setting, a compressor in Remote mode is placed into
Manual mode requiring operator intervention.
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